well i love buying into hype to get real answers... i bought a 1000w badass ballast made by advanced nutrients. from day one it was the loudest ballast in my garden but never had a problem till yesterday when i went into my garden to see it wasnt working... figured it was the bulb... but i couldnt be that lucky after a bunch of testing i brought the ballast back to the hydro store to see whats upwith the warranty to only see they dont carry them anymore... majority of the ballast sold came back with all sorts of malfunctions... mine wouldnt fire a hps bulb and when it fired a mh bulb it flicker real bad... it work fine from middle of dec of 2010 till middle of oct 2011 not even a year of life... i wouldnt say it was worth it... hydro store made it right and gave me a 1000w dig ballast to make up for them failing my grow... im a real mmj patient with real problems and i depend on my equipment to work specially when i spend mucho dienro in this recession!! so advanced before you lose another customer step up quality control